Tropical Cyclones
[Index] | Tropical Cyclone YASI : JTWC Advisories |
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WTPS21 PGTW 20110129 17:00z MSGID/GENADMIN/NAVMARFCSTCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE FORMATION ALERT// RMKS/ 1. FORMATION OF A SIGNIFICANT TROPICAL CYCLONE IS POSSIBLE WITHIN 170 NM EITHER SIDE OF A LINE FROM 14.3S 173.2E TO 15.4S 166.1E WITHIN THE NEXT 12 TO 24 HOURS. AVAILABLE DATA DOES NOT JUSTIFY ISSUANCE OF NUMBERED TROPICAL CYCLONE WARNINGS AT THIS TIME. WINDS IN THE AREA ARE ESTIMATED TO BE 25 TO 30 KNOTS. METSAT IMAGERY AT 291630Z INDICATES THAT A CIRCULATION CENTER IS LOCATED NEAR 14.3S 172.4E. THE SYSTEM IS MOVING WESTWARD AT 08 KNOTS. 2. REMARKS: THE AREA OF CONVECTION PREVIOUSLY LOCATED NEAR 14.3S 172.4E IS NOW LOCATED NEAR 14.3S 172.4E, APPROXIMATELY 315 NM NORTHEAST OF PORT VILA, VANUATU. ANIMATED INFRARED SATELLITE IMAGERY AND A 291408Z AMSU IMAGE INDICATE INCREASING CONSOLIDATION OVER THE PAST 12 HOURS WITH CONVECTIVE BANDING OVER THE NORTHERN SEMI-CIRCLE WRAPPING INTO THE NORTHEAST QUADRANT. A 291031Z ASCAT IMAGE DEPICTED A SYMMETRIC, WELL-DEFINED LOW-LEVEL CIRCULATION CENTER (LLCC) WITH 25-30 KNOT WINDS OVER THE NORTHEAST QUADRANT. OVER THE PAST 24 HOURS, THE LLCC HAS STRENGTHENED AND BECOME WELL-DEFINED. UPPER- LEVEL ANALYSIS INDICATES THAT THE LLCC IS LOCATED UNDER AN EXTENSION OF THE UPPER-LEVEL RIDGE WITH WEAK TO MODERATE VERTICAL WIND SHEAR. OVERALL, THE OUTFLOW HAS IMPROVED WITH CONTINUED GOOD EQUATORWARD OUTFLOW AND ENHANCED POLEWARD OUTFLOW DUE TO A STRONG UPPER-LEVEL ANTICYCLONE POSITIONED JUST SOUTH OF FIJI. NUMERICAL MODELS CONTINUE TO PREDICT SIGNIFICANT DEVELOPMENT OVER THE NEXT 24- 48 HOURS. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 25 TO 30 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1000 MB. DUE TO THE IMPROVED CONSOLIDATION AND FAVORABLE UPPER LEVEL CONDITIONS, THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS GOOD. 3. THIS ALERT WILL BE REISSUED, UPGRADED TO WARNING OR CANCELLED BY 301700Z.// ========================================================================= WTPS31 PGTW 20110130 03:00z MSGID/GENADMIN/NAVMARFCSTCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE 11P (ELEVEN) WARNING NR 001// REF/A/NAVMARFCSTCEN PEARL HARBOR HI/291651Z JAN 11// AMPN/TROPICAL CYCLONE FORMATION ALERT// RMKS/ 1. TROPICAL CYCLONE 11P (ELEVEN) WARNING NR 001 02 ACTIVE TROPICAL CYCLONES IN SOUTHPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 300000Z --- NEAR 13.2S 170.5E MOVEMENT PAST SIX HOURS - 285 DEGREES AT 07 KTS POSITION ACCURATE TO WITHIN 040 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY REPEAT POSIT: 13.2S 170.5E --- FORECASTS: 12 HRS, VALID AT: 301200Z --- 12.6S 168.2E MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 060 NM NORTHEAST QUADRANT 065 NM SOUTHEAST QUADRANT 065 NM SOUTHWEST QUADRANT 060 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 275 DEG/ 13 KTS --- 24 HRS, VALID AT: 310000Z --- 12.4S 165.5E MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 050 KT WINDS - 040 NM NORTHEAST QUADRANT 040 NM SOUTHEAST QUADRANT 040 NM SOUTHWEST QUADRANT 040 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 070 NM NORTHEAST QUADRANT 075 NM SOUTHEAST QUADRANT 075 NM SOUTHWEST QUADRANT 070 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 270 DEG/ 16 KTS --- 36 HRS, VALID AT: 311200Z --- 12.4S 162.2E MAX SUSTAINED WINDS - 070 KT, GUSTS 085 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 025 NM NORTHEAST QUADRANT 025 NM SOUTHEAST QUADRANT 025 NM SOUTHWEST QUADRANT 025 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 035 NM NORTHEAST QUADRANT 035 NM SOUTHEAST QUADRANT 035 NM SOUTHWEST QUADRANT 035 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 080 NM NORTHEAST QUADRANT 085 NM SOUTHEAST QUADRANT 085 NM SOUTHWEST QUADRANT 080 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 260 DEG/ 19 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 010000Z --- 13.1S 158.4E MAX SUSTAINED WINDS - 080 KT, GUSTS 100 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 030 NM NORTHEAST QUADRANT 030 NM SOUTHEAST QUADRANT 030 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 050 NM NORTHEAST QUADRANT 050 NM SOUTHEAST QUADRANT 050 NM SOUTHWEST QUADRANT 050 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 090 NM NORTHEAST QUADRANT 095 NM SOUTHEAST QUADRANT 095 NM SOUTHWEST QUADRANT 090 NM NORTHWEST QUADRANT VECTOR TO 72 HR POSIT: 245 DEG/ 15 KTS --- 72 HRS, VALID AT: 020000Z --- 15.3S 152.8E MAX SUSTAINED WINDS - 100 KT, GUSTS 125 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 040 NM NORTHEAST QUADRANT 040 NM SOUTHEAST QUADRANT 040 NM SOUTHWEST QUADRANT 040 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 060 NM NORTHEAST QUADRANT 060 NM SOUTHEAST QUADRANT 060 NM SOUTHWEST QUADRANT 060 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 100 NM NORTHEAST QUADRANT 105 NM SOUTHEAST QUADRANT 105 NM SOUTHWEST QUADRANT 100 NM NORTHWEST QUADRANT VECTOR TO 96 HR POSIT: 240 DEG/ 15 KTS --- LONG RANGE OUTLOOK: NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 250 NM ON DAY 4 AND 350 NM ON DAY 5... AND FOR INTENSITY NEAR 20 KT EACH DAY. --- 96 HRS, VALID AT: 030000Z --- 18.0S 147.3E MAX SUSTAINED WINDS - 110 KT, GUSTS 135 KT WIND RADII VALID OVER OPEN WATER ONLY VECTOR TO 120 HR POSIT: 235 DEG/ 15 KTS --- 120 HRS, VALID AT: 040000Z --- 21.3S 142.1E MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND --- REMARKS: 300300Z POSITION NEAR 13.1S 169.9E. TROPICAL CYCLONE (TC) 11P, LOCATED APPROXIMATELY 305 NM NORTH- NORTHEAST OF PORT VILA, VANUATU, HAS TRACKED WEST-NORTHWESTWARD AT 07 KNOTS OVER THE PAST SIX HOURS. ANIMATED MULTISPECTRAL SATELLITE IMAGERY SHOWS A RAPIDLY-CONSOLIDATING LOW-LEVEL CIRCULATION CENTER (LLCC) WITH TIGHTLY-CURVED CONVECTIVE BANDING WRAPPING INTO A WELL- DEFINED CENTER. RECENT MICROWAVE IMAGERY IS UNAVAILABLE, HOWEVER, A 291814Z CORIOLIS 36H IMAGE ALSO SUPPORTED THE RAPID DEVELOPMENT AND DEPICTED MULTIPLE CONVECTIVE BANDING AND A SMALL MICROWAVE EYE FEATURE. A 292139Z ASCAT IMAGE SHOWED 30-35 KNOT WINDS NEAR THE CENTER. THE CURRENT INTENSITY IS BASED ON THE IMPRESSIVE SATELLITE SIGNATURE AS WELL AS THE CORRESPONDING DVORAK ESTIMATES OF 35 KNOTS FROM PGTW AND PHFO. UPPER-LEVEL ANALYSIS INDICATES THAT THE LLCC IS LOCATED UNDER AN ANTICYCLONE WITH WEAK VERTICAL WIND SHEAR (VWS). ANIMATED WATER VAPOR IMAGERY DEPICTED EXCELLENT RADIAL OUTFLOW. TC 11P IS CURRENTLY TRACKING ALONG THE NORTHERN PERIPHERY OF THE DEEP SUBTROPICAL RIDGE (STR) POSITIONED TO THE SOUTH. THE SYSTEM IS EXPECTED TO TRACK GENERALLY WESTWARD THROUGH TAU 48 THEN TURN WEST- SOUTHWESTWARD TO SOUTHWESTWARD IN THE LATER TAUS. THE STR IS EXPECTED TO MAINTAIN THROUGH THE PERIOD BUT WILL SHIFT EAST AND RE- ORIENT AS A MIDLATITUDE SHORTWAVE TROUGH DEEPENS OVER CENTRAL AUSTRALIA AFTER TAU 72. THE AVAILABLE MODEL GUIDANCE IS LIMITED BUT IS TIGHTLY CLUSTERED THEREFORE THERE IS GOOD CONFIDENCE IN THE TRACK. THE ECMWF TRACKER IS UNAVAILABLE BUT THE 29/12Z MODEL FIELDS ARE IN CLOSE AGREEMENT WITH THE MODEL CONSENSUS. THIS FORECAST TRACK IS BASED LARGELY ON THE CONSENSUS. BASED ON THE FAVORABLE CONDITIONS THROUGHOUT THE FORECAST PERIOD AND THE RECENT INTENSIFICATION TREND, TC 11P IS EXPECTED TO INTENSIFY AT A 20-25 KNOT RATE PER DAY THROUGH TAU 72 AND AT A SLOWER RATE UNTIL MAKING LANDFALL NEAR TAU 96. THERE IS POTENTIAL FOR THIS SYSTEM TO PEAK HIGHER THAN 110 KNOTS AND MAKE LANDFALL AS A VERY STRONG, LARGE SYSTEM. THIS WARNING SUPERSEDES AND CANCELS REF A, NAVMARFCSTCEN 291651Z JAN 11 TROPICAL CYCLONE FORMATION ALERT (WTPS21 PGTW 291700). MAXIMUM SIGNIFICANT WAVE HEIGHT AT 300000Z IS 11 FEET. NEXT WARNINGS AT 301500Z AND 310300Z. REFER TO TROPICAL CYCLONE 09P (ANTHONY) WARNINGS (WTPS32 PGTW) FOR TWELVE-HOURLY UPDATES.// ========================================================================= WTPS31 PGTW 20110130 15:00z MSGID/GENADMIN/NAVMARFCSTCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE 11P (YASI) WARNING NR 002// RMKS/ 1. TROPICAL CYCLONE 11P (YASI) WARNING NR 002 02 ACTIVE TROPICAL CYCLONES IN SOUTHPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 301200Z --- NEAR 13.2S 167.6E MOVEMENT PAST SIX HOURS - 270 DEGREES AT 16 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 030 NM NORTHEAST QUADRANT 035 NM SOUTHEAST QUADRANT 035 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT REPEAT POSIT: 13.2S 167.6E --- FORECASTS: 12 HRS, VALID AT: 310000Z --- 13.5S 164.7E MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 050 KT WINDS - 025 NM NORTHEAST QUADRANT 025 NM SOUTHEAST QUADRANT 025 NM SOUTHWEST QUADRANT 025 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 060 NM NORTHEAST QUADRANT 065 NM SOUTHEAST QUADRANT 065 NM SOUTHWEST QUADRANT 060 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 260 DEG/ 16 KTS --- 24 HRS, VALID AT: 311200Z --- 13.9S 161.5E MAX SUSTAINED WINDS - 075 KT, GUSTS 090 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 020 NM NORTHEAST QUADRANT 020 NM SOUTHEAST QUADRANT 020 NM SOUTHWEST QUADRANT 020 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 040 NM NORTHEAST QUADRANT 040 NM SOUTHEAST QUADRANT 040 NM SOUTHWEST QUADRANT 040 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 070 NM NORTHEAST QUADRANT 075 NM SOUTHEAST QUADRANT 075 NM SOUTHWEST QUADRANT 070 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 260 DEG/ 16 KTS --- 36 HRS, VALID AT: 010000Z --- 14.5S 158.3E MAX SUSTAINED WINDS - 085 KT, GUSTS 105 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 025 NM NORTHEAST QUADRANT 025 NM SOUTHEAST QUADRANT 025 NM SOUTHWEST QUADRANT 025 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 045 NM NORTHEAST QUADRANT 045 NM SOUTHEAST QUADRANT 045 NM SOUTHWEST QUADRANT 045 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 080 NM NORTHEAST QUADRANT 085 NM SOUTHEAST QUADRANT 085 NM SOUTHWEST QUADRANT 080 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 255 DEG/ 17 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 011200Z --- 15.4S 155.0E MAX SUSTAINED WINDS - 095 KT, GUSTS 115 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 030 NM NORTHEAST QUADRANT 030 NM SOUTHEAST QUADRANT 030 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 050 NM NORTHEAST QUADRANT 050 NM SOUTHEAST QUADRANT 050 NM SOUTHWEST QUADRANT 050 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 090 NM NORTHEAST QUADRANT 095 NM SOUTHEAST QUADRANT 095 NM SOUTHWEST QUADRANT 090 NM NORTHWEST QUADRANT VECTOR TO 72 HR POSIT: 245 DEG/ 15 KTS --- 72 HRS, VALID AT: 021200Z --- 17.9S 149.3E MAX SUSTAINED WINDS - 105 KT, GUSTS 130 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 040 NM NORTHEAST QUADRANT 040 NM SOUTHEAST QUADRANT 040 NM SOUTHWEST QUADRANT 040 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 060 NM NORTHEAST QUADRANT 060 NM SOUTHEAST QUADRANT 060 NM SOUTHWEST QUADRANT 060 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 100 NM NORTHEAST QUADRANT 105 NM SOUTHEAST QUADRANT 105 NM SOUTHWEST QUADRANT 100 NM NORTHWEST QUADRANT VECTOR TO 96 HR POSIT: 245 DEG/ 15 KTS --- LONG RANGE OUTLOOK: NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 250 NM ON DAY 4 AND 350 NM ON DAY 5... AND FOR INTENSITY NEAR 20 KT EACH DAY. --- 96 HRS, VALID AT: 031200Z --- 20.3S 143.6E MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 120 HR POSIT: 245 DEG/ 10 KTS --- 120 HRS, VALID AT: 041200Z --- 21.9S 139.7E MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND --- REMARKS: 301500Z POSITION NEAR 13.3S 166.9E. TROPICAL CYCLONE (TC) 11P (YASI), LOCATED APPROXIMATELY 1280 NM EAST OF CAIRNS, AUSTRALIA, HAS TRACKED WESTWARD AT 16 KNOTS OVER THE PAST SIX HOURS. ANIMATED WATER VAPOR IMAGERY SHOWS CONVECTIVE BANDS CONTINUE TO DEEPEN AND WRAP MORE TIGHTLY AROUND THE LOW LEVEL CIRCULATION CENTER AS RADIAL OUTFLOW IMPROVES. THE INITIAL POSITION IS BASED ON A 301011Z AMSU-B MICROWAVE IMAGE AND THE INITIAL INTENSITY IS SUPPORTED BY DVORAK ESTIMATES FROM PHFO, NFFN, AND PGTW. UPPER-LEVEL ANALYSIS INDICATES THE SYSTEM IS UNDER AN ANTICYCLONE WITH WEAK VERTICAL WIND SHEAR (VWS). TC 11P IS CURRENTLY TRACKING ALONG THE NORTHERN PERIPHERY OF THE DEEP SUBTROPICAL RIDGE (STR) TO THE SOUTH. THE SYSTEM IS EXPECTED TO TRACK GENERALLY WESTWARD THROUGH TAU 36 THEN TURN WEST-SOUTHWESTWARD AS THE STR SHIFTS EAST WITH THE APPROACH OF A MID-LATITUDE SHORTWAVE TROUGH FROM THE WEST AFTER TAU 60. THE AVAILABLE NUMERICAL MODEL GUIDANCE IS IN TIGHT AGREEMENT, LENDING HIGH CONFIDENCE TO THE TRACK. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 301200Z IS 13 FEET. NEXT WARNINGS AT 310300Z AND 311500Z.// ========================================================================= WTPS31 PGTW 20110131 03:00z MSGID/GENADMIN/NAVMARFCSTCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE 11P (YASI) WARNING NR 003// RMKS/ 1. TROPICAL CYCLONE 11P (YASI) WARNING NR 003 01 ACTIVE TROPICAL CYCLONE IN SOUTHPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 310000Z --- NEAR 13.6S 164.4E MOVEMENT PAST SIX HOURS - 260 DEGREES AT 16 KTS POSITION ACCURATE TO WITHIN 040 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 065 KT, GUSTS 080 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT 030 NM SOUTHEAST QUADRANT 030 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 070 NM NORTHEAST QUADRANT 075 NM SOUTHEAST QUADRANT 075 NM SOUTHWEST QUADRANT 070 NM NORTHWEST QUADRANT REPEAT POSIT: 13.6S 164.4E --- FORECASTS: 12 HRS, VALID AT: 311200Z --- 13.9S 161.0E MAX SUSTAINED WINDS - 080 KT, GUSTS 100 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 020 NM NORTHEAST QUADRANT 020 NM SOUTHEAST QUADRANT 020 NM SOUTHWEST QUADRANT 020 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 035 NM NORTHEAST QUADRANT 035 NM SOUTHEAST QUADRANT 035 NM SOUTHWEST QUADRANT 035 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 075 NM NORTHEAST QUADRANT 080 NM SOUTHEAST QUADRANT 080 NM SOUTHWEST QUADRANT 075 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 260 DEG/ 17 KTS --- 24 HRS, VALID AT: 010000Z --- 14.6S 157.5E MAX SUSTAINED WINDS - 095 KT, GUSTS 115 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 025 NM NORTHEAST QUADRANT 025 NM SOUTHEAST QUADRANT 025 NM SOUTHWEST QUADRANT 025 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 040 NM NORTHEAST QUADRANT 040 NM SOUTHEAST QUADRANT 040 NM SOUTHWEST QUADRANT 040 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 080 NM NORTHEAST QUADRANT 085 NM SOUTHEAST QUADRANT 085 NM SOUTHWEST QUADRANT 080 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 255 DEG/ 16 KTS --- 36 HRS, VALID AT: 011200Z --- 15.5S 154.4E MAX SUSTAINED WINDS - 110 KT, GUSTS 135 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 025 NM NORTHEAST QUADRANT 025 NM SOUTHEAST QUADRANT 025 NM SOUTHWEST QUADRANT 025 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 040 NM NORTHEAST QUADRANT 040 NM SOUTHEAST QUADRANT 040 NM SOUTHWEST QUADRANT 040 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 085 NM NORTHEAST QUADRANT 090 NM SOUTHEAST QUADRANT 090 NM SOUTHWEST QUADRANT 085 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 250 DEG/ 15 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 020000Z --- 16.6S 151.4E MAX SUSTAINED WINDS - 115 KT, GUSTS 140 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 025 NM NORTHEAST QUADRANT 025 NM SOUTHEAST QUADRANT 025 NM SOUTHWEST QUADRANT 025 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 045 NM NORTHEAST QUADRANT 045 NM SOUTHEAST QUADRANT 045 NM SOUTHWEST QUADRANT 045 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 095 NM NORTHEAST QUADRANT 100 NM SOUTHEAST QUADRANT 100 NM SOUTHWEST QUADRANT 095 NM NORTHWEST QUADRANT VECTOR TO 72 HR POSIT: 250 DEG/ 15 KTS --- 72 HRS, VALID AT: 030000Z --- 18.7S 145.6E MAX SUSTAINED WINDS - 100 KT, GUSTS 125 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 025 NM NORTHEAST QUADRANT 025 NM SOUTHEAST QUADRANT 025 NM SOUTHWEST QUADRANT 025 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 045 NM NORTHEAST QUADRANT 045 NM SOUTHEAST QUADRANT 045 NM SOUTHWEST QUADRANT 045 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 100 NM NORTHEAST QUADRANT 105 NM SOUTHEAST QUADRANT 105 NM SOUTHWEST QUADRANT 100 NM NORTHWEST QUADRANT VECTOR TO 96 HR POSIT: 245 DEG/ 13 KTS --- LONG RANGE OUTLOOK: NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 250 NM ON DAY 4 AND 350 NM ON DAY 5... AND FOR INTENSITY NEAR 20 KT EACH DAY. --- 96 HRS, VALID AT: 040000Z --- 20.9S 140.6E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND --- REMARKS: 310300Z POSITION NEAR 13.7S 163.6E. TROPICAL CYCLONE (TC) 11P, LOCATED APPROXIMATELY 1100 NM EAST OF CAIRNS, AUSTRALIA, HAS TRACKED WESTWARD AT 16 KNOTS OVER THE PAST SIX HOURS. ANIMATED MULTISPECTRAL SATELLITE IMAGERY DEPICTS A RAPIDLY CONSOLIDATING SYSTEM WITH TIGHTLY-CURVED BANDING WRAPPING INTO A WELL-DEFINED LOW-LEVEL CIRCULATION CENTER. ANIMATED WATER VAPOR IMAGERY DEPICTS EXCELLENT RADIAL OUTFLOW. THE CURRENT INTENSITY IS BASED ON DVORAK ESTIMATES OF 65 KNOTS FROM KNES AND PGTW. TC 11P IS TRACKING ALONG THE NORTHERN PERIPHERY OF A DEEP SUBTROPICAL RIDGE (STR) POSITIONED TO THE SOUTH. THE SYSTEM IS EXPECTED TO TRACK WEST-SOUTHWESTWARD THROUGH TAU 72. THE STR IS EXPECTED TO MAINTAIN THROUGH THE PERIOD BUT WILL SHIFT EAST AND RE- ORIENT AS A MIDLATITUDE SHORTWAVE TROUGH DEEPENS OVER CENTRAL AUSTRALIA AFTER TAU 72. THIS WILL ALLOW THE SYSTEM TO TURN SOUTHWESTWARD AFTER MAKING LANDFALL NEAR TAU 72. THE AVAILABLE MODEL GUIDANCE IS IN EXCEPTIONALLY CLOSE AGREEMENT THROUGH TAU 120, THEREFORE, THERE IS GOOD CONFIDENCE IN THE FORECAST TRACK, WHICH IS BASED LARGELY ON THE MODEL CONSENSUS. TC 11P HAS RAPIDLY INTENSIFIED OVER THE PAST 24 HOURS, INCREASING FROM 35 TO 65 KNOTS, AND IS EXPECTED TO INTENSIFY AT A 20-30 KNOT RATE PER DAY THROUGH TAU 48, PEAKING AT 115 KNOTS NEAR TAU 48. TC 11P IS FORECAST TO MAKE LANDFALL AS A 100+ KNOT, LARGE SYSTEM. TC 11P SHOULD DISSIPATE OVER LAND BY TAU 96. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 310000Z IS 18 FEET. NEXT WARNINGS AT 311500Z AND 010300Z.// ========================================================================= WTPS31 PGTW 20110131 15:00z MSGID/GENADMIN/NAVMARFCSTCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE 11P (YASI) WARNING NR 004// RMKS/ 1. TROPICAL CYCLONE 11P (YASI) WARNING NR 004 01 ACTIVE TROPICAL CYCLONE IN SOUTHPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 311200Z --- NEAR 13.4S 160.5E MOVEMENT PAST SIX HOURS - 275 DEGREES AT 19 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 090 KT, GUSTS 110 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 030 NM NORTHEAST QUADRANT 030 NM SOUTHEAST QUADRANT 030 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 040 NM NORTHEAST QUADRANT 045 NM SOUTHEAST QUADRANT 045 NM SOUTHWEST QUADRANT 040 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 090 NM NORTHEAST QUADRANT 095 NM SOUTHEAST QUADRANT 095 NM SOUTHWEST QUADRANT 090 NM NORTHWEST QUADRANT REPEAT POSIT: 13.4S 160.5E --- FORECASTS: 12 HRS, VALID AT: 010000Z --- 13.9S 156.7E MAX SUSTAINED WINDS - 105 KT, GUSTS 130 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 040 NM NORTHEAST QUADRANT 040 NM SOUTHEAST QUADRANT 040 NM SOUTHWEST QUADRANT 040 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 050 NM NORTHEAST QUADRANT 055 NM SOUTHEAST QUADRANT 055 NM SOUTHWEST QUADRANT 050 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 100 NM NORTHEAST QUADRANT 105 NM SOUTHEAST QUADRANT 105 NM SOUTHWEST QUADRANT 100 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 255 DEG/ 17 KTS --- 24 HRS, VALID AT: 011200Z --- 14.9S 153.3E MAX SUSTAINED WINDS - 120 KT, GUSTS 145 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 045 NM NORTHEAST QUADRANT 045 NM SOUTHEAST QUADRANT 045 NM SOUTHWEST QUADRANT 045 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 060 NM NORTHEAST QUADRANT 065 NM SOUTHEAST QUADRANT 065 NM SOUTHWEST QUADRANT 060 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 110 NM NORTHEAST QUADRANT 115 NM SOUTHEAST QUADRANT 110 NM SOUTHWEST QUADRANT 110 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 250 DEG/ 15 KTS --- 36 HRS, VALID AT: 020000Z --- 16.0S 150.4E MAX SUSTAINED WINDS - 125 KT, GUSTS 150 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 045 NM NORTHEAST QUADRANT 045 NM SOUTHEAST QUADRANT 045 NM SOUTHWEST QUADRANT 045 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 060 NM NORTHEAST QUADRANT 065 NM SOUTHEAST QUADRANT 065 NM SOUTHWEST QUADRANT 060 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 110 NM NORTHEAST QUADRANT 115 NM SOUTHEAST QUADRANT 110 NM SOUTHWEST QUADRANT 110 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 250 DEG/ 16 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 021200Z --- 17.2S 147.3E MAX SUSTAINED WINDS - 120 KT, GUSTS 145 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND RADIUS OF 064 KT WINDS - 045 NM NORTHEAST QUADRANT 045 NM SOUTHEAST QUADRANT 045 NM SOUTHWEST QUADRANT 045 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 060 NM NORTHEAST QUADRANT 065 NM SOUTHEAST QUADRANT 065 NM SOUTHWEST QUADRANT 060 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 090 NM NORTHEAST QUADRANT 110 NM SOUTHEAST QUADRANT 095 NM SOUTHWEST QUADRANT 090 NM NORTHWEST QUADRANT VECTOR TO 72 HR POSIT: 245 DEG/ 14 KTS --- 72 HRS, VALID AT: 031200Z --- 19.3S 141.8E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND --- REMARKS: 311500Z POSITION NEAR 13.5S 159.5E. TROPICAL CYCLONE (TC) 11P (YASI), LOCATED APPROXIMATELY 875 NM EAST-NORTHEAST OF CAIRNS, AUSTRALIA, HAS TRACKED WESTWARD AT 19 KNOTS OVER THE PAST SIX HOURS. ANIMATED INFRARED SATELLITE IMAGERY SHOWS DEEP CONVECTIVE BANDS WRAPPING TIGHTER INTO THE LOW LEVEL CIRCULATION CENTER, FUELED BY EXCELLENT RADIAL OUTFLOW. THE CURRENT INTENSITY IS BASED ON A SOLID DVORAK ESTIMATE OF 90 KNOTS FROM MULTIPLE AGENCIES INCLUDING KNES, PHFO, NFFN, AND PGTW. TC 11P IS TRACKING ALONG THE NORTHERN PERIPHERY OF A DEEP SUBTROPICAL RIDGE (STR) POSITIONED TO THE SOUTH. THE SYSTEM IS EXPECTED TO TRACK WEST- BECOMING SOUTHWESTWARD AS THE STR SHIFTS EASTWARD WITH THE APPROACH OF A MID-LATITUDE SHORTWAVE TROUGH FROM THE WEST. UPPER LEVEL ANALYSIS INDICATES THE SYSTEM HAS DEVELOPED A MESOSCALE ANTICYCLONE ALOFT AND CONTINUES TO TRACK ALONG AN AREA OF LOW VERTICAL WIND SHEAR. IN VIEW OF THE FAVORABLE ENVIRONMENT, TC YASI WILL CONTINUE TO INTENSIFY, PEAKING AT 125 KNOTS BY TAU 36. THE AVAILABLE NUMERICAL GUIDANCE IS IN EXCEPTIONALLY CLOSE AGREEMENT THROUGHOUT THE FORECAST PERIOD. TC 11P IS FORECAST TO MAKE LANDFALL JUST SOUTH OF CAIRNS AS A LARGE 100+ KNOT SYSTEM AFTER TAU 48 AND SHOULD DISSIPATE OVER LAND BY TAU 72. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 311200Z IS 23 FEET. NEXT WARNINGS AT 010300Z AND 011500Z.// ========================================================================= WTPS31 PGTW 20110201 03:00z MSGID/GENADMIN/NAVMARFCSTCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE 11P (YASI) WARNING NR 005// RMKS/ 1. TROPICAL CYCLONE 11P (YASI) WARNING NR 005 01 ACTIVE TROPICAL CYCLONE IN SOUTHPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 010000Z --- NEAR 14.1S 156.5E MOVEMENT PAST SIX HOURS - 255 DEGREES AT 20 KTS POSITION ACCURATE TO WITHIN 040 NM POSITION BASED ON EYE FIXED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 100 KT, GUSTS 125 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 035 NM NORTHEAST QUADRANT 035 NM SOUTHEAST QUADRANT 035 NM SOUTHWEST QUADRANT 035 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 065 NM NORTHEAST QUADRANT 075 NM SOUTHEAST QUADRANT 075 NM SOUTHWEST QUADRANT 065 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 150 NM NORTHEAST QUADRANT 160 NM SOUTHEAST QUADRANT 160 NM SOUTHWEST QUADRANT 150 NM NORTHWEST QUADRANT REPEAT POSIT: 14.1S 156.5E --- FORECASTS: 12 HRS, VALID AT: 011200Z --- 15.0S 153.0E MAX SUSTAINED WINDS - 105 KT, GUSTS 130 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 035 NM NORTHEAST QUADRANT 035 NM SOUTHEAST QUADRANT 035 NM SOUTHWEST QUADRANT 035 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 070 NM NORTHEAST QUADRANT 080 NM SOUTHEAST QUADRANT 080 NM SOUTHWEST QUADRANT 070 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 155 NM NORTHEAST QUADRANT 165 NM SOUTHEAST QUADRANT 165 NM SOUTHWEST QUADRANT 155 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 250 DEG/ 17 KTS --- 24 HRS, VALID AT: 020000Z --- 16.0S 149.7E MAX SUSTAINED WINDS - 115 KT, GUSTS 140 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 035 NM NORTHEAST QUADRANT 035 NM SOUTHEAST QUADRANT 035 NM SOUTHWEST QUADRANT 035 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 075 NM NORTHEAST QUADRANT 085 NM SOUTHEAST QUADRANT 085 NM SOUTHWEST QUADRANT 075 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 160 NM NORTHEAST QUADRANT 170 NM SOUTHEAST QUADRANT 170 NM SOUTHWEST QUADRANT 160 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 250 DEG/ 17 KTS --- 36 HRS, VALID AT: 021200Z --- 17.2S 146.4E MAX SUSTAINED WINDS - 125 KT, GUSTS 150 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 035 NM NORTHEAST QUADRANT 035 NM SOUTHEAST QUADRANT 035 NM SOUTHWEST QUADRANT 035 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 080 NM NORTHEAST QUADRANT 090 NM SOUTHEAST QUADRANT 090 NM SOUTHWEST QUADRANT 080 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 165 NM NORTHEAST QUADRANT 175 NM SOUTHEAST QUADRANT 175 NM SOUTHWEST QUADRANT 165 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 250 DEG/ 17 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 030000Z --- 18.3S 143.0E MAX SUSTAINED WINDS - 075 KT, GUSTS 090 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 72 HR POSIT: 245 DEG/ 12 KTS --- 72 HRS, VALID AT: 040000Z --- 20.3S 138.2E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 96 HR POSIT: 250 DEG/ 10 KTS --- LONG RANGE OUTLOOK: NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 250 NM ON DAY 4 AND 350 NM ON DAY 5... AND FOR INTENSITY NEAR 20 KT EACH DAY. --- 96 HRS, VALID AT: 050000Z --- 21.7S 134.0E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND --- REMARKS: 010300Z POSITION NEAR 14.3S 155.6E. TROPICAL CYCLONE (TC) 11P (YASI), LOCATED APPROXIMATELY 640 NM EAST- NORTHEAST OF CAIRNS, AUSTRALIA, HAS TRACKED WEST-SOUTHWESTWARD AT 20 KNOTS OVER THE PAST SIX HOURS. ANIMATED WATER VAPOR IMAGERY INDICATES RADIAL OUTFLOW HAS PERSISTED DURING THE PAST 12 TO 24 HOURS FUELING IMPRESSIVE DEEP CONVECTION. CONVECTIVE BANDS CONTINUE TO FEED INTO THE CENTER. THE INITIAL INTENSITY IS SUPPORTED BY DVORAK ESTIMATES FROM ABRF AND PGTW RANGING FROM 90 TO 102 KNOTS. FURTHERMORE A CLOUD-FILLED RAGGED EYE HAS BECOME APPARENT ON VISIBLE AND INFRARED IMAGERY DURING THE PAST SIX HOURS, OF WHICH THE INITIAL POSITION IS BASED WITH FAIR TO HIGH CONFIDENCE. UPPER-LEVEL CONDITIONS ARE EXPECTED TO REMAIN FAVORABLE DURING THE NEXT 48 HOURS. TC 11P IS CURRENTLY TRACKING ALONG THE NORTHWESTERN PERIPHERY OF THE DEEP SUBTROPICAL RIDGE TO THE SOUTHEAST, AND THE SYSTEM IS EXPECTED TO CONTINUE TRACKING WEST-SOUTHWESTWARD TOWARD CAIRNS, AUSTRALIA. THE AVAILABLE NUMERICAL MODEL GUIDANCE IS IN TIGHT AGREEMENT, AND TRACK CONFIDENCE IS HIGH. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 010000Z IS 27 FEET. NEXT WARNINGS AT 011500Z AND 020300Z.// ========================================================================= WTPS31 PGTW 20110201 15:00z MSGID/GENADMIN/NAVMARFCSTCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE 11P (YASI) WARNING NR 006// RMKS/ 1. TROPICAL CYCLONE 11P (YASI) WARNING NR 006 01 ACTIVE TROPICAL CYCLONE IN SOUTHPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 011200Z --- NEAR 14.9S 153.2E MOVEMENT PAST SIX HOURS - 255 DEGREES AT 17 KTS POSITION ACCURATE TO WITHIN 020 NM POSITION BASED ON EYE FIXED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 120 KT, GUSTS 145 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 040 NM NORTHEAST QUADRANT 050 NM SOUTHEAST QUADRANT 050 NM SOUTHWEST QUADRANT 040 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 090 NM NORTHEAST QUADRANT 100 NM SOUTHEAST QUADRANT 100 NM SOUTHWEST QUADRANT 090 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 180 NM NORTHEAST QUADRANT 200 NM SOUTHEAST QUADRANT 200 NM SOUTHWEST QUADRANT 180 NM NORTHWEST QUADRANT REPEAT POSIT: 14.9S 153.2E --- FORECASTS: 12 HRS, VALID AT: 020000Z --- 15.9S 149.7E MAX SUSTAINED WINDS - 130 KT, GUSTS 160 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 050 NM NORTHEAST QUADRANT 060 NM SOUTHEAST QUADRANT 060 NM SOUTHWEST QUADRANT 050 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 100 NM NORTHEAST QUADRANT 110 NM SOUTHEAST QUADRANT 110 NM SOUTHWEST QUADRANT 100 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 190 NM NORTHEAST QUADRANT 210 NM SOUTHEAST QUADRANT 210 NM SOUTHWEST QUADRANT 190 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 250 DEG/ 18 KTS --- 24 HRS, VALID AT: 021200Z --- 17.1S 146.2E MAX SUSTAINED WINDS - 130 KT, GUSTS 160 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 050 NM NORTHEAST QUADRANT 060 NM SOUTHEAST QUADRANT 060 NM SOUTHWEST QUADRANT 050 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 100 NM NORTHEAST QUADRANT 110 NM SOUTHEAST QUADRANT 110 NM SOUTHWEST QUADRANT 100 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 190 NM NORTHEAST QUADRANT 210 NM SOUTHEAST QUADRANT 210 NM SOUTHWEST QUADRANT 190 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 245 DEG/ 17 KTS --- 36 HRS, VALID AT: 030000Z --- 18.5S 143.0E MAX SUSTAINED WINDS - 080 KT, GUSTS 100 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 48 HR POSIT: 245 DEG/ 15 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 031200Z --- 19.7S 140.2E MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 72 HR POSIT: 245 DEG/ 12 KTS --- 72 HRS, VALID AT: 041200Z --- 21.7S 135.6E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND --- REMARKS: 011500Z POSITION NEAR 15.2S 152.3E. TROPICAL CYCLONE (TC) 11P (YASI), LOCATED APPROXIMATELY 450 NM EAST- NORTHEAST OF CAIRNS, AUSTRALIA, HAS TRACKED WEST-SOUTHWESTWARD AT 17 KNOTS OVER THE PAST SIX HOURS. ANIMATED INFRARED SATELLITE IMAGERY SHOWS A 10 NM EYE, FROM WHICH THE INITIAL POSITION WAS BASED. THE INITIAL INTENSITY WAS BASED ON PGTW AND ABRF DVORAK ESTIMATES RANGING FROM 115 TO 127 KNOTS. A POLEWARD OUTFLOW CHANNEL INTO AN UPPER LEVEL LOW TO THE SOUTH, ALONG WITH GOOD EQUATORWARD OUTFLOW HAS ALLOWED FOR RAPID INTENSIFICATION WITHIN THE PAST 12 HOURS. TC 11P IS CURRENTLY TRACKING ALONG THE NORTHERN PERIPHERY OF A DEEP LAYER SUBTROPICAL STEERING RIDGE AND IS EXPECTED TO TRACK GENERALLY WEST-SOUTHWESTWARD THROUGHOUT THE FORECAST PERIOD. THE SYSTEM SHOULD CONTINUE TO INTENSIFY DUE TO EXCELLENT OUTFLOW, LOW VERTICAL WIND SHEAR, AND FAVORABLE OCEANIC CONDITIONS. AROUND TAU 24, THE SYSTEM IS FORECAST TO MAKE LANDFALL JUST SOUTH OF CAIRNS AND BEGIN WEAKENING AS IT TRACKS INLAND. THE AVAILABLE NUMERICAL MODEL GUIDANCE IS IN TIGHT AGREEMENT AND TRACK CONFIDENCE IS HIGH. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 011200Z IS 38 FEET. NEXT WARNINGS AT 020300Z AND 021500Z.// ========================================================================= WTPS31 PGTW 20110202 03:00z MSGID/GENADMIN/NAVMARFCSTCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE 11P (YASI) WARNING NR 007// RMKS/ 1. TROPICAL CYCLONE 11P (YASI) WARNING NR 007 01 ACTIVE TROPICAL CYCLONE IN SOUTHPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 020000Z --- NEAR 16.4S 149.9E MOVEMENT PAST SIX HOURS - 245 DEGREES AT 16 KTS POSITION ACCURATE TO WITHIN 030 NM POSITION BASED ON EYE FIXED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 125 KT, GUSTS 150 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 045 NM NORTHEAST QUADRANT 050 NM SOUTHEAST QUADRANT 045 NM SOUTHWEST QUADRANT 045 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 085 NM NORTHEAST QUADRANT 095 NM SOUTHEAST QUADRANT 085 NM SOUTHWEST QUADRANT 080 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 200 NM NORTHEAST QUADRANT 220 NM SOUTHEAST QUADRANT 200 NM SOUTHWEST QUADRANT 190 NM NORTHWEST QUADRANT REPEAT POSIT: 16.4S 149.9E --- FORECASTS: 12 HRS, VALID AT: 021200Z --- 17.7S 146.6E MAX SUSTAINED WINDS - 130 KT, GUSTS 160 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 045 NM NORTHEAST QUADRANT 050 NM SOUTHEAST QUADRANT 045 NM SOUTHWEST QUADRANT 045 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 090 NM NORTHEAST QUADRANT 100 NM SOUTHEAST QUADRANT 090 NM SOUTHWEST QUADRANT 090 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 190 NM NORTHEAST QUADRANT 200 NM SOUTHEAST QUADRANT 180 NM SOUTHWEST QUADRANT 180 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 245 DEG/ 18 KTS --- 24 HRS, VALID AT: 030000Z --- 19.2S 143.1E MAX SUSTAINED WINDS - 100 KT, GUSTS 125 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 36 HR POSIT: 240 DEG/ 17 KTS --- 36 HRS, VALID AT: 031200Z --- 20.9S 140.0E MAX SUSTAINED WINDS - 065 KT, GUSTS 080 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 48 HR POSIT: 230 DEG/ 14 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 040000Z --- 22.6S 137.6E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND --- REMARKS: 020300Z POSITION NEAR 16.7S 149.1E. TROPICAL CYCLONE (TC) 11P (YASI), LOCATED APPROXIMATELY 245 NM EAST OF CAIRNS, AUSTRALIA, HAS TRACKED WEST-SOUTHWESTWARD AT 16 KNOTS OVER THE PAST SIX HOURS. THE TC TRACKED OVER WILLIS ISLAND AT AROUND 2200Z WITH MAXIMUM SUSTAINED WINDS LOGGED IN EXCESS OF 70 KNOTS GUSTING TO OVER 100 KNOTS. AN IMPRESSIVE EYEWALL HAD BEEN VISIBLE ON THE WILLIS ISLAND RADAR THAT HAS SINCE BECOME INOPERABLE. THE CYCLONE WILL MOVE WITHIN RANGE OF THE CAIRNS RADAR IN THE NEXT FEW HOURS AND WILL PASS BETWEEN HOLMES REEF AND FLINDERS REEF BEFORE MAKING LANDFALL NEAR CAIRNS. THE TC SHOULD MAINTAIN ITS CURRENT INTENSITY OF 125 KNOTS (OR POSSIBLY EVEN STRENGTHEN SOME) BEFORE MAKING LANDFALL AS ENVIRONMENTAL CONDITIONS WILL REMAIN FAVORABLE. DVORAK ESTIMATES FROM PGTW AND ABRF CURRENTLY RANGE FROM 115 TO 127 KNOTS. YASI WILL DISSIPATE OVER THE INTERIOR OF AUSTRALIA AFTER COMING ASHORE. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 020000Z IS 38 FEET. NEXT WARNINGS AT 021500Z AND 030300Z.// ========================================================================= WTPS31 PGTW 20110202 15:00z MSGID/GENADMIN/NAVMARFCSTCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE 11P (YASI) WARNING NR 008// RMKS/ 1. TROPICAL CYCLONE 11P (YASI) WARNING NR 008 01 ACTIVE TROPICAL CYCLONE IN SOUTHPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 021200Z --- NEAR 17.5S 146.8E MOVEMENT PAST SIX HOURS - 250 DEGREES AT 13 KTS POSITION ACCURATE TO WITHIN 020 NM POSITION BASED ON EYE FIXED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 135 KT, GUSTS 165 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 080 NM NORTHEAST QUADRANT 075 NM SOUTHEAST QUADRANT 060 NM SOUTHWEST QUADRANT 060 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 125 NM NORTHEAST QUADRANT 125 NM SOUTHEAST QUADRANT 115 NM SOUTHWEST QUADRANT 125 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 210 NM NORTHEAST QUADRANT 220 NM SOUTHEAST QUADRANT 200 NM SOUTHWEST QUADRANT 200 NM NORTHWEST QUADRANT REPEAT POSIT: 17.5S 146.8E --- FORECASTS: 12 HRS, VALID AT: 030000Z --- 18.6S 143.6E MAX SUSTAINED WINDS - 100 KT, GUSTS 125 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 24 HR POSIT: 245 DEG/ 16 KTS --- 24 HRS, VALID AT: 031200Z --- 19.9S 140.4E MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 36 HR POSIT: 240 DEG/ 13 KTS --- 36 HRS, VALID AT: 040000Z --- 21.1S 137.9E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND --- REMARKS: 021500Z POSITION NEAR 17.8S 146.0E. TROPICAL CYCLONE (TC) 11P (YASI), LOCATED APPROXIMATELY 70 NM EAST- SOUTHEAST OF CAIRNS, AUSTRALIA, HAS TRACKED WEST-SOUTHWESTWARD AT 13 KNOTS OVER THE PAST SIX HOURS. ANIMATED INFRARED SATELLITE IMAGERY SHOWS A 30 NM EYE AND THE CAIRNS RADAR DEPICTS A WELL-DEFINED EYEWALL. THE INITIAL INTENSITY WAS BASED ON PGTW, KNES, AND ABRF DVORAK ESTIMATES RANGING FROM 127 TO 140 KNOTS. TC 11P HAS SLIGHTLY SLOWED IN TRANSLATION SPEED ALONG THE NORTHERN PERIPHERY OF A DEEP LAYER SUBTROPICAL STEERING RIDGE AND IS EXPECTED TO MAKE LANDFALL SOUTH OF CAIRNS WITHIN THE NEXT 6 HOURS. THE SYSTEM WILL BEGIN TO WEAKEN AS IT TRACKS OVER LAND AND DISSIPATE AS A SIGNIFICANT TROPICAL CYCLONE BY TAU 36. NUMERICAL MODEL FORECAST GUIDANCE IS IN VERY GOOD AGREEMENT, THEREFORE THERE IS HIGH CONFIDENCE IN THIS TRACK FORECAST. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 021200Z IS 42 FEET. NEXT WARNINGS AT 030300Z AND 031500Z.// ========================================================================= WTPS31 PGTW 20110203 03:00z MSGID/GENADMIN/NAVMARFCSTCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE 11P (YASI) WARNING NR 009// RMKS/ 1. TROPICAL CYCLONE 11P (YASI) WARNING NR 009 01 ACTIVE TROPICAL CYCLONE IN SOUTHPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 030000Z --- NEAR 19.3S 143.4E MOVEMENT PAST SIX HOURS - 240 DEGREES AT 20 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY A COMBINATION OF SATELLITE AND SYNOPTIC DATA PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND REPEAT POSIT: 19.3S 143.4E --- FORECASTS: 12 HRS, VALID AT: 031200Z --- 20.9S 139.9E MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 24 HR POSIT: 245 DEG/ 15 KTS --- 24 HRS, VALID AT: 040000Z --- 22.0S 137.0E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND --- REMARKS: 030300Z POSITION NEAR 19.7S 142.5E. TROPICAL CYCLONE (TC) 11P (YASI), LOCATED APPROXIMATELY 200 NM SOUTHWEST OF CAIRNS, AUSTRALIA, HAS TRACKED WEST-SOUTHWESTWARD AT 20 KNOTS OVER THE PAST SIX HOURS. ANIMATED MULTISPECTRAL IMAGERY SHOWS THAT DESPITE CROSSING THE GREAT DIVIDING RANGE, THE SYSTEM HAS MAINTAINED CLEAR ORGANIZATION. ANIMATED INFRARED IMAGERY, HOWEVER, INDICATES SUBSTANTIAL WARMING OF THE CLOUD TOPS AND A MARKED DECREASE IN CONVECTION. SURFACE OBSERVATIONS FROM GEORGETOWN AIRPORT, APPROXIMATELY 40 NM NORTH OF STORM TRACK, DECREASED TO BELOW 35 KNOTS AS THE SYSTEM PASSED. TC 11P IS CROSSING THE NORTHERN END OF THE GREGORY RANGE AND WILL MOVE OVER FLATTER MARSHLANDS, WHERE IT IS EXPECTED TO GRADUALLY DISSIPATE OVER THE AUSTRALIAN INTERIOR. MODEL GUIDANCE REMAINS IN TIGHT AGREEMENT ON TRACK, SPEED, AND INTENSITY. THIS IS THE FINAL TROPICAL CYCLONE WARNING ON THIS SYSTEM BY THE JOINT TYPHOON WARNING CENTER (NAVMARFCSTCEN PEARL HARBOR, HI). THE SYSTEM WILL BE CLOSELY MONITORED FOR SIGNS OF REGENERATION.//
Tropical cyclone tracks developed by Michael Bath using operational warnings and advisories.
Document: tropical_cyclone_yasi_jtwc_advisories.htm
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